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Crystalline-to-Amorphous Transitions in Ti-Ni Alloys

Published online by Cambridge University Press:  25 February 2011

R. Pelton,
P. Moine,
M. A. Noack and
R. Sinclair
R. Pelton
Affiliation:
Metallurgy and Ceramics Division, Ames Laboratory, Iowa State University, Ames, IA 50011
P. Moine
Affiliation:
Universite de Poitiers, Poitiers, France
M. A. Noack
Affiliation:
Metallurgy and Ceramics Division, Ames Laboratory, Iowa State University, Ames, IA 50011
R. Sinclair
Affiliation:
Dept. of Mat. Sci. and Engr., Stanford Univ., Stanford, CA 94305
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Abstract

Ti-Ni alloys have been made amorphous over a broad composition range by sputter deposition, ion implantation and electron irradiation. Structural analysis of these alloys was made by electron diffraction techniques. Microdensitometer traces of diffraction patterns produced scattering profiles from which radial distribution functions (RDF's) were derived. The results from this analysis were comparable to those from x-ray diffraction studies on similar alloys. It was found that the positions of the intensity maxima vary systematically with alloy composition. However, values of coordination number were less precise due to experimental uncertainties. Furthermore, no dramatic differences were observed in the RDF's of the samples amorphized by the three techniques.

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